Updated May 31, 2026

Cups to Teaspoons Converter

Multiply cups by 48 to get teaspoons. 1 cup = 48 teaspoons. For example, 0.5 cups = 24 tsp, 0.25 cups = 12 tsp, and 2 cups = 96 tsp.

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Common Conversions

Key Takeaways

  • 1 cup = 48 teaspoons. Multiply cups by 48 for teaspoons.
  • 0.5 cups = 24 teaspoons.
  • 0.25 cups = 12 teaspoons (4 tablespoons).
  • 1 teaspoon = 1/48 of a cup (about 0.0208 cups).
  • US teaspoons (4.93 mL) and metric teaspoons (5 mL) are nearly identical.

How Do You Convert Cups to Teaspoons?

Multiply the number of cups by 48 to get teaspoons. The formula is: Teaspoons = Cups x 48. One cup holds 16 tablespoons, and each tablespoon holds 3 teaspoons, giving 48 teaspoons per cup.

Leah Novak converts cup measurements to teaspoons when making small test batches. Her full cake recipe calls for 0.5 cups of vanilla extract, but for a single cupcake test she needs 1/12 of that: 0.5 x 48 / 12 = 2 teaspoons. Working in teaspoons makes tiny amounts easier to measure precisely.

Quick Reference Table

Cups Teaspoons Also Equals
1/8 cup6 tsp2 tablespoons
1/4 cup12 tsp4 tablespoons
1/3 cup16 tsp5 tbsp + 1 tsp
1/2 cup24 tsp8 tablespoons
2/3 cup32 tsp10 tbsp + 2 tsp
3/4 cup36 tsp12 tablespoons
1 cup48 tsp16 tablespoons
2 cups96 tsp1 pint

Practical Applications

Spice Blending

Marco Ferreira creates his own spice blends for the restaurant. His Cajun seasoning recipe makes 1 cup total, using 48 teaspoons worth of combined spices: 12 tsp paprika, 8 tsp garlic powder, 8 tsp onion powder, 6 tsp cayenne, 6 tsp black pepper, 4 tsp oregano, and 4 tsp thyme. Converting the cup total to teaspoons helps him balance each component precisely.

Science Experiments

Maya Thompson measures chemical solutions for her science fair project in teaspoons because the school lab lacks graduated cylinders. Her experiment requires 0.25 cups of vinegar per trial. She converts: 0.25 x 48 = 12 teaspoons per trial, measured with a proper measuring spoon for consistency across all 10 trials.

Pet Nutrition

Tom Whitfield adds supplements to his dog food, measured in teaspoons. The supplement container lists daily doses by cup fractions, but his measuring spoon set only has teaspoons. A 1/8 cup dose converts to 6 teaspoons, which he splits into 3 teaspoons at each of the two daily meals.


Related Calculators

Frequently Asked Questions

How many teaspoons are in a cup?

There are exactly 48 teaspoons in one US cup. A cup has 16 tablespoons, and each tablespoon has 3 teaspoons, so 16 x 3 = 48.

How do I convert cups to teaspoons?

Multiply the number of cups by 48. The formula is Teaspoons = Cups x 48. For example, 0.5 cups x 48 = 24 teaspoons.

How many teaspoons is a quarter cup?

A quarter cup (0.25 cups) equals 12 teaspoons. This is also 4 tablespoons or 2 fluid ounces.

Why would I convert cups to teaspoons?

Teaspoon measurements are useful when you need a small fraction of a cup, such as 1/12 of a cup (4 tsp) or when scaling down a recipe to a single serving. Teaspoons are also common for measuring spices and extracts.

Are metric teaspoons the same as US teaspoons?

They are very close. A US teaspoon is 4.93 mL while a metric teaspoon is exactly 5 mL. The difference of 0.07 mL (about 1.4%) is negligible for most cooking purposes.